Here are my observations with my African Flameback Angelfish.
Centropyge acanthops
https://forums.saltwaterfish.com/t/332430/spankos-bio-cube-what-in-posidens-name-is-he-up-to-now
You pays your money and you takes your chances.
I have recently added a couple of LPS coral to my tank and so far the Angel has been the perfect gentlemangentlewoman.
I see it nip at the Gorgaonian very rarely and it has not caused any problems.
I have not seen it nip at any SPS or Zoanthis or Ricordea.
I feed my tank very heavily daily and always keep an algae sheet in a clip for a snack.
I feel that keeping it well fed may have something to do with it not needing to nip at the coral for food.
It is a terror to my chalk bass. Chases the poor thing, but does not harm it.
My Bali Tiger Jawfish will do the mouth open wide gig to scare the angel off.
I have seen it get cleaned by my skunk cleaner shrimp.
I love this fish. Always cruising in and out of the rockwork, picking at the rocks for some algae and has some of the most beautiful coloring especially under the actinics.
All of that said, I will not hesitate removing this fish if it starts to harm my coral.